Book Image

VMware vSphere Troubleshooting

Book Image

VMware vSphere Troubleshooting

Overview of this book

VMware vSphere is the leading server virtualization platform with consistent management for virtual data centers. It enhances troubleshooting skills to diagnose and resolve day to day problems in your VMware vSphere infrastructure environment. This book will provide you practical hands-on knowledge of using different performance monitoring and troubleshooting tools to manage and troubleshoot the vSphere infrastructure. It begins by introducing systematic approach for troubleshooting different problems and show casing the troubleshooting techniques. You will be able to use the troubleshooting tools to monitor performance, and troubleshoot issues related to Hosts and Virtual Machines. Moving on, you will troubleshoot High Availability, storage I/O control problems, virtual LANS, and iSCSI, NFS, VMFS issues. By the end of this book, you will be able to analyze and solve advanced issues related to vShpere environment such as vcenter certificates, database problems, and different failed state errors.
Table of Contents (16 chapters)
VMware vSphere Troubleshooting
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Installing VMware vRealize Operations Manager
Power CLI - A Basic Reference
Index

The HA agent initialization error


The HA agent can also produce the operation timed out error. Removing a vSphere host and adding it again to the cluster doesn't solve the problem. Here is how you can resolve it:

  1. Log in to your vSphere client.

  2. Disable High Availability on the cluster.

  3. Select a vSphere host and go to the Configuration tab.

  4. Click on Security Profile in the left column.

  5. Click on Properties and verify the status of vSphere High Availability.

  6. Set the service to start and stop automatically, and start if it the service is stopped.

  7. Enable HA again on the cluster and reconfigure it.

Reinstalling the HA agent

If you want to reinstall the vpxa agent into your vSphere hosts without losing their database entries, you can perform the following procedure without affecting the running virtual machines. To reconfigure the HA agent from the vSphere client, follow these steps:

  1. Log in to your vSphere client.

  2. Select a vSphere Host in a cluster where you want to perform reconfiguration.

  3. Right-click on the...